I have the same problem on a T9400 (Thinkpad W500). I'm running KDE though. System usage is 15% (which used to be <2%), and xorg is really laggy (a few seconds to swtich screens) with 10-40% cpu usage (which used to be 1-10% on 8.10). I also noticed that some idle processes (Mathematica, MathKernel, Java) use 8-10% CPU, which did not happen on 8.10. At some point (maybe 1-2 hours after starting) desktop effects completely freeze, but even with them turned off it's the same problem. Went back to 8.10 now.
-- excessive CPU usage in 9.04- no apparent reason https://bugs.launchpad.net/bugs/366292 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
